Document VJN5a3RNmvZZdNQEB8rOJeEd4

TO AT Copies to INTER-OFFICE MEMORANDUM J. H. Walton 1586 KB D. R. P. J. J. F. K. J. Canham - 2462 KB Franklin - 2453 KB Modaff - Delanco Singer - Delanco Date July 9, 11 From A. J. fromifiirshausej at 2675 OB Subject Asbestos Samples - Kaiser Gypsum, Delanco Plant On June 6, 1974, air samples were taken in the acces sories department. The fiber counts were received from the laboratory today. Sample No. Operation Fiber Count Reported Time Weighted Average TLV D-l Dumping Asbestos (Pre-Mix) 32.9 0.8 5 fibers/cc D-3 Dumping Asbestos (K-Spray) 10.2 0.2 5 fibers/cc D-5 Dumping Asbestos (Pre-Mix) 9.1 0.2 5 fibers/cc D-2 D-4 Packing (K-Spray) Packing (K-Spray) 1.5 5.8 1.5 5.8 5 fibers/cc 5 fibers/cc D-6 Packing (K-Spray) 2.9 2.9 5 fibers/cc The operators during the sampling were: D-l D-2 D-3 D-4 D-5 D-6 Jose Rodrigues Walt Taylor Mark James Walt Taylor Jose Rodrigues Walt Taylor All of the samples except D-4 are below the standard of 5 fibers/cc, and D-4 is only slightly above. However, a time weighted average for all three samples for Mark Taylor, Samples D-2, D-4 and D-6, would be 3.4 fibers which is below the limit. Because of the peak concentrations considerably above the standard, the workers should continue to wear their masks as an added safety factor and, of course, continue their good work practices. 11m KG-0029